CN2448949Y

CN2448949Y - Swing straight line type large stroke oil pump

Info

Publication number: CN2448949Y
Application number: CN 00253120
Authority: CN
Inventors: 赵国文
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-11-16
Filing date: 2000-11-16
Publication date: 2001-09-19
Anticipated expiration: 2010-11-16

Abstract

The utility model relates to a swing straight line type large stroke oil pump which comprises a motor, a main chain wheel and a box body, wherein a critical part which is composed of an elliptical inner gear ring, a sector gear wheel, a planetary wheel, a crank and an upper gear wheel is arranged. When the utility model works, the motor leads the crank to rotate through a speed reducer to drive the planetary wheel to generate revolution. The inner gear ring prevents the planetary wheel from the revolution, therefore the planetary wheel generates rotation and drives the inner gear ring to swing so that the sector gear wheel is driven to swing, and the upper gear wheel swings following the sector gear wheel. The swinging motion of the upper gear wheel is amplified through a stroke variable device to drive the main chain wheel to swing, and the linear displacement of a wheel rim of the main chain wheel is the stroke of the oil pump. The utility model can lead a well rod to move in an approximate straight line mode, the abrasion is little, and the service life of the part is extended.

Description

The big stroke beam-pumping unit of swing type straight line type

The utility model belongs to machinery manufacturing technology field, relates to a kind of machinery of recover petroleum, particularly a kind of pumping unit.

Traditional pumping unit stroke is little, and the torque curve fluctuation is big, and reversing impact is big, and effect is undesirable.Proposed a kind of driving mechanism of mainly being made up of ring gear and planet wheel in No. 98236508 patent specifications, track is arranged in the ring gear, planet wheel and motor be orbital motion together, make and cause insufficient lubrication by the machine bad sealing that the dust storm invasion and attack are serious, component wear is fast, causes working life short.

The purpose of this utility model is will provide a kind of can reduce the commutation inertia impact, and can realize that critical part thoroughly is closed in the big stroke beam-pumping unit of swing type straight line type in the main frame casing.

Solution of the present utility model is to be equiped with in casing by ellipse garden shape ring gear, tooth sector, planet wheel, crank and the critical part that cogs and constitute, wherein ring gear is connected with tooth sector, the joint is equiped with main shaft, planet wheel and ring gear are meshing with each other, the hinge joint of crank one end is on planet wheel shaft, the other end is connected by the motor of speed reducer with the casing outside, the tooth sector and the engagement that cogs, and cogging is connected by the main chain wheel of range device with the casing outside.During work, motor rotates crank by retarder, drive planet wheel and produce revolution, ring gear stops planetary gear revolution, so planet wheel generation rotation, and promotion ring gear swing, thereby drive the tooth sector swing, the swing thereupon that cogs is amplified by the swing that the range device will cog, the swing of drive main chain wheel, its bead wires displacement is the stroke of pumping unit.

Suspension point maximum acceleration of the present utility model is lower than 0.065 meter per second ², can make the well bar make approximate straight line motion, critical part is not encroached on by dust storm, and greasy property is good, and it is little to wear and tear, and has increased the working life of parts, has reduced the weight of pumping unit simultaneously, and cost is low, and energy consumption is little, and is easy to maintenance.

Below in conjunction with drawings and Examples the utility model is further specified:

Accompanying drawing is the utility model schematic representation.

The utility model is by motor 1, speed reducer 2, main chain wheel 3, oil pumping sprocket wheel 4, counterweight sprocket wheel 5, chain 6, casing 7 and range device 14 constitute, be equiped with ellipse garden shape ring gear 8 in the casing 7, tooth sector 9, planet wheel 11, crank 12 and cog 13, wherein ring gear 8 is connected with tooth sector 9, the joint is equiped with main shaft 10, planet wheel 11 is meshing with each other with ring gear 8, the hinge joint of crank 12 1 ends is on 11 of planet wheels, the other end is connected with the motor 1 of casing 7 outsides by speed reducer 2, the

tooth sector

9 and 13 engagements that cog, cogging 13 is connected with 3 of the main chain wheels of casing 7 outsides by range device 14.

Claims

1, the big stroke beam-pumping unit of a kind of swing type straight line type, by motor (1), speed reducer (2), main chain wheel (3), oil pumping sprocket wheel (4), counterweight sprocket wheel (5), chain (6), casing (7) and range device (14) constitute, it is characterized in that: be equiped with ellipse garden shape ring gear (8) in the casing (7), tooth sector (9), planet wheel (11), crank (12) and cog (13), wherein ring gear (8) is connected with tooth sector (9), the joint is equiped with main shaft (10), planet wheel (11) is meshing with each other with ring gear (8), the hinge joint of crank (12) one ends is on planet wheel (11) axle, the other end is connected by the outside motor (1) of speed reducer (2) and casing (7), the tooth sector (9) and (13) engagement that cogs, cog (13) are connected by outside main chain wheel (3) axle of range device (14) and case these (7).